package com.itheima.controller;

import com.itheima.constant.MessageConstant;
import com.itheima.entity.Result;
import com.itheima.service.MemberService;
import com.itheima.service.ReportService;
import com.itheima.service.SetmealService;
import org.apache.dubbo.config.annotation.Reference;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;


import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.OutputStream;
import java.math.BigDecimal;
import java.text.SimpleDateFormat;
import java.util.*;

@RestController
@RequestMapping("/report")
public class ReportController {
    @Reference
    private MemberService memberService;
    @Reference
    private SetmealService setmealService;
    @Reference
    private ReportService reportService;

    @RequestMapping("/getMemberReport")
    public Result getMemberReport(){

        Map<String,Object> map = new HashMap<>();

        //计算日期
        Calendar calendar = Calendar.getInstance();
        calendar.add(Calendar.MONTH,-12);
        //将日期添加到list集合中
        List<String> months = new ArrayList<>();
        for (int i = 0; i < 12; i++) {
            calendar.add(Calendar.MONTH,1);
            Date date = calendar.getTime();
            months.add(new SimpleDateFormat("yyyy.MM").format(date));
        }
        //将日期集合加进map中
        map.put("months",months);

        //会员数量查出并添加进集合
        List<Integer> memberCount = memberService.findMemberCountByMonths(months);
        //将会员数量集合加进map中
        map.put("memberCount",memberCount);
        return new Result(true, MessageConstant.GET_MEMBER_NUMBER_REPORT_SUCCESS,map);
    }


    @RequestMapping("/getSetmealReport")
    public Result getSetmealReport(){
        Map<String,Object> map = new HashMap<>();

        try{
            //查询setmealCount
            List<Map<String,Object>> setmealCount = setmealService.findSetmealCount();

            map.put("setmealCount",setmealCount);
            //遍历查询出来的查询setmealCount，把其中的套餐名称添加进集合
            List<String> setmealNames = new ArrayList<>();

            for (Map<String, Object> setmeal : setmealCount) {

                String name = (String) setmeal.get("NAME");
                setmealNames.add(name);
            }
            map.put("setmealNames",setmealNames);

            return new Result(true,MessageConstant.GET_SETMEAL_COUNT_REPORT_SUCCESS,map);
        }catch (Exception e){
            e.printStackTrace();
            return new Result(false,MessageConstant.GET_SETMEAL_COUNT_REPORT_FAIL);
        }
    }

    @RequestMapping("/getBusinessReportData")
    public Result getBusinessReportData(){
        try {
            Map<String,Object> map = reportService.getBusinessReportData();
            return new Result(true,MessageConstant.GET_BUSINESS_REPORT_SUCCESS,map);
        } catch (Exception e) {
            e.printStackTrace();
            return new Result(true,MessageConstant.GET_BUSINESS_REPORT_FAIL);
        }
    }

    @RequestMapping("/exportBusinessReport")
    public Result exportBusinessReport(HttpServletResponse response, HttpServletRequest request) throws Exception {
        try {
            Map<String, Object> result = reportService.getBusinessReportData();

            String reportDate = (String) result.get("reportDate");
            Integer todayNewMember = (Integer) result.get("todayNewMember");
            Integer totalMember = (Integer) result.get("totalMember");
            Integer thisWeekNewMember = (Integer) result.get("thisWeekNewMember");
            Integer thisMonthNewMember = (Integer) result.get("thisMonthNewMember");
            Integer todayOrderNumber = (Integer) result.get("todayOrderNumber");
            Integer thisWeekOrderNumber = (Integer) result.get("thisWeekOrderNumber");
            Integer thisMonthOrderNumber = (Integer) result.get("thisMonthOrderNumber");
            Integer todayVisitsNumber = (Integer) result.get("todayVisitsNumber");
            Integer thisWeekVisitsNumber = (Integer) result.get("thisWeekVisitsNumber");
            Integer thisMonthVisitsNumber = (Integer) result.get("thisMonthVisitsNumber");
            List<Map> hotSetmeal = (List<Map>) result.get("hotSetmeal");

            String filePath = request.getSession().getServletContext().getRealPath("template")+ File.separator + "report_template.xlsx";

            XSSFWorkbook excel = new XSSFWorkbook(new FileInputStream(filePath));

            XSSFSheet sheet = excel.getSheetAt(0);

            XSSFRow row = sheet.getRow(2);
            row.getCell(5).setCellValue(reportDate);//日期

            row = sheet.getRow(4);
            row.getCell(5).setCellValue(todayNewMember);//新增会员数（本日）
            row.getCell(7).setCellValue(totalMember);//总会员数

            row = sheet.getRow(5);
            row.getCell(5).setCellValue(thisWeekNewMember);//本周新增会员数
            row.getCell(7).setCellValue(thisMonthNewMember);//本月新增会员数

            row = sheet.getRow(7);
            row.getCell(5).setCellValue(todayOrderNumber);//今日预约数
            row.getCell(7).setCellValue(todayVisitsNumber);//今日到诊数

            row = sheet.getRow(8);
            row.getCell(5).setCellValue(thisWeekOrderNumber);//本周预约数
            row.getCell(7).setCellValue(thisWeekVisitsNumber);//本周到诊数

            row = sheet.getRow(9);
            row.getCell(5).setCellValue(thisMonthOrderNumber);//本月预约数
            row.getCell(7).setCellValue(thisMonthVisitsNumber);//本月到诊数

            int rowNum = 11;
            for (Map map : hotSetmeal) {
                String name = (String) map.get("name");
                Long setmeal_count = (Long) map.get("setmeal_count");
                BigDecimal proportion = (BigDecimal) map.get("proportion");
                rowNum++;
                row = sheet.getRow(rowNum);
                if (row == null) {
                    row = sheet.createRow(rowNum);
                }

                if (row.getCell(4) == null) {
                    row.createCell(4).setCellValue(name);
                } else {
                    row.getCell(4).setCellValue(name);
                }

                if (row.getCell(5) == null) {
                    row.createCell(5).setCellValue(setmeal_count);
                } else {
                    row.getCell(5).setCellValue(setmeal_count);
                }

                if (row.getCell(6) == null) {
                    row.createCell(6).setCellValue(proportion.doubleValue());
                } else {
                    row.getCell(6).setCellValue(proportion.doubleValue());
                }

            }

            OutputStream out = response.getOutputStream();
            response.setContentType("application/vnd.ms-excel");
            response.setHeader("content-Disposition", "attachment;filename=report.xlsx");

            excel.write(out);

            out.flush();
            out.close();
            excel.close();
            return null;
        } catch (Exception e) {
            e.printStackTrace();
            return new Result(false,MessageConstant.GET_BUSINESS_REPORT_FAIL);
        }
    }


}
